Remove PNaCl's RequestFirstInstall, use resource throttle instead

components/nacl/common/pnacl_types.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/nacl/common/pnacl_types.h"
 
 namespace nacl {
 
 PnaclCacheInfo::PnaclCacheInfo()
     : abi_version(0), opt_level(0), has_no_store_header(0) {}
 PnaclCacheInfo::~PnaclCacheInfo() {}
 
-// static
-bool PnaclInstallProgress::progress_known(const PnaclInstallProgress& p) {
-  return p.total_size >= 0;
-}
-
-// static
-PnaclInstallProgress PnaclInstallProgress::Unknown() {
-  PnaclInstallProgress p;
-  p.current = 0;
-  // Use -1 to indicate that total is not determined.
-  // This matches the -1 of the OnURLFetchDownloadProgress interface in
-  // net/url_request/url_fetcher_delegate.h
-  p.total_size = -1;
-  return p;
-}
-
 }  // namespace nacl